Thermal indices in relation to crop phenology and seed yield of soybean (Glycine max L. Merrill)

被引：0
|
作者：
Neog, Prasanta [1 ]
Bhuyan, J. [2 ]
Baruah, N. [1 ]
机构：
[1] BN Coll Agr, Dept Agrometeorol, Sonitpur 784176, Assam, India
[2] BN Coll Agr, AICRP Soybean, Sonitpur 784176, Assam, India
来源：
JOURNAL OF AGROMETEOROLOGY | 2008年 / 10卷
关键词：
Soybean; GDD; PTI and HUE;
D O I：
暂无
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
Field experiments were conducted on sandy loam soil of farm area of BN College of Agriculture, AAU, Assam with five varieties of soybean for two kharif seasons (2005 and 2006). It was observed that in the first crop season all the varieties matured within 107 to 122 days, while in the second crop season crop matured within 96 to 116 days, thus the crop took 3 to 14 days more to mature in first crop season. The mean GDD accumulation from sowing to maturity ranged from 1760.9 to 2213.1 degrees D. The varieties, RAUS 5 and SL 742 consumed the lowest and highest GDD for attaining physiological maturity in different sowing dates among all varieties. The phenothermal Index (PTI) in all the varieties and seasons varied from 17.74 to 19.46 degrees D/day and 17.44 to 18.47 degrees D/day in vegetative and reproductive stage respectively.
引用
收藏
页码：388 / 392
页数：5
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